We divide 642185 by 72
We're looking to find how many times 72 goes into 642185.

On to step 1:
The number 72 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 72

Going ahead to step 2:
When dividing 64 by 72, we get 0 with a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Bring next digit (2) of the dividend behind the 64 and repeat the process: 642 / 72

Moving on to step 3:
The number 72 fits into 642 8 times, leaving a remainder of 66.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 576 from 642 leaves us with 66.
Take the next digit (1) from the dividend and append it to 66, then repeat: 661 / 72

Advancing to step 4:
If we divide 661 by 72, we get 9 and a remainder of 13.
Use 9 as the next digit of our solution. 
Result so far: 89.0
Deduct 648 from 661 and we're left with 13.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 72

On to step 5:
138 divided by 72 is 1 with a remainder of 66.
The next digit of our result is 1. 
Result so far: 891.0
If we subtract 72 from 138, we get 66.
Take the next digit (5) from the dividend and append it to 66, then repeat: 665 / 72

Step 6:
665 divided by 72 is 9 with a remainder of 17.
The number 9 becomes the next digit in our result. 
Result so far: 8919.0
The remainder is 17 after subtracting 648 from 665.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 7:
When dividing 170 by 72, we get 2 with a remainder of 26.
The next digit of our result is 2. 
Result so far: 8919.2
Subtract 144 from 170 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 8:
72 can be fit into 260 3 times, resulting in a remainder of 44.
Put 3 as the next digit of the answer. 
Result so far: 8919.23
The remainder is 44 after subtracting 216 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 9:
When dividing 440 by 72, we get 6 with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 8919.236
If we subtract 432 from 440, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
80 divided by 72 is 1 with a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 8919.2361
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 11:
80 divided by 72 is 1 with a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 8919.23611
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 8919.23611 and a remainder of 8e-06.